NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Dongmei Li

University of South Carolina
Darla Moore School of Business
1014 Greene St
Columbia, SC 29208

E-Mail: EmailAddress: hidden: you can email any NBER-related person as first underscore last at nber dot org

NBER Working Papers and Publications

May 2017Innovative Originality, Profitability, and Stock Returns
with David Hirshleifer, Po-Hsuan Hsu: w23432
We propose that innovative originality (InnOrig) is a valuable organizational resource, and that owing to limited investor attention and skepticism of complexity, firms with greater InnOrig are undervalued. We find that firms’ InnOrig strongly predicts higher, more persistent, and less volatile profitability; and higher abnormal stock returns—findings that are robust to extensive controls. The return predictive power of InnOrig is stronger for firms with higher valuation uncertainty, lower investor attention, and greater sensitivity of future profitability to InnOrig. This evidence suggests that innovative originality acts as a ‘competitive moat,’ and that the market undervalues InnOrig.
September 2008Costly External Finance: Implications for Capital Markets Anomalies
with Lu Zhang: w14342
In a frictionless world, investment is perfectly elastic to changes in the discount rate. With financial frictions, investment is less elastic, meaning that a given magnitude of change in investment is associated with a higher magnitude of change in the discount rate. Equivalently, investment is a more powerful predictor of future stock returns. Consistent with this prediction, we document that the asset growth, external finance, and accrual anomalies in the cross-section of stock returns are much stronger in financially more constrained firms than in financially less constrained firms. Further tests show that this effect of financial constraints is distinct from the effect of financial distress and the effect of limits of arbitrage on the magnitude of the anomalies.
 
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